| 摘要 |
An agitator impeller arrangement (1) for dispersing gas into a slurry of solids and liquid, the arrangement comprising an impeller (6) having a plurality of agitating blades (8) mounted radially and equally spaced to the circular hub disc (7). Each agitating blade (8) comprises a lower vertical dispersion blade (9) located below the plane of the circular hub disc (7) parallel to the radius of the circular hub disc, said vertical dispersion blade (9) having a straight vertical outer edge (10) being close to a periphery (11) of the circular hub disc (7), an inner edge (12) which is close to the shaft (2) and a rounded edge (13) curving with a radius r between the outer edge and the inner edge, an upper vertical dispersion blade (14) located above the plane of the circular hub disc (7) and parallel to the radius of the circular hub disc, and an inclined suspension blade (15) located radially outside the periphery of the circular hub disc (7), at a first angle (a) in relation to the vertical direction and below the plane of the circular hub disc. |
